158 C.-A. Westerlund, 



ad Upsala (C. H. Johanson!); prov. Westmanland: in lacu Mälaren ad 

 Joliannesberg et Gäddeholm nee non in Svartån (Johanson!); prov. Dalarne 

 in par. Gustaf (Riddeeb. sec. Johans.!). 



2. PISIDIUM HENSLOWANÜM (Shepp.) 



Concha ineequilatera , oblique triangulari-ovalis, postice abbreviata, 

 medio plus minus tumida, tenuiter striata, vix nitidula, plerumque ex toto 

 lutescenti-albida; umhones protubérantes, natibus eonvexis; margo dorsalis 

 protensus, rectiusculus, forte declivus, ventralis, posterior et a?!imo3- breves, 

 pulchre arcuati; valvulœ inferne anj^ulum ad 80° formantes. Long. 4~ — 5, 

 alt. 3|— 4, er. 2|— 3 mm. 



a typicuni: conclia natibus plica compressa longitudinali ornatis. 



lellina hemsloicana Siieppaid in Linn. Soc. ïrans. XIV (1823) p. 150 

 (testib. Jeffr. et Moquin-Tandon). 



Cyclas appendiculata Tuvton Man. (1831) p. 15 f. 6. 



Pisidium lieiisloiviammi Jenyns Monogr. Cycl. in Trans. Phil. Soc. 

 Cambr, IV (1833) p. 308. t. 21. f. G— 9. Hausen Öfvers. af 

 Vet. Akad. Förli. (1848) p. 202. Malm Göteb. Vet., Vitt. Samli:s 

 Handl. III (1855) p. 94. c. fig. Eeeve Brit. Moll. (18G3) p. 

 234 c. fio-. Mörch Syn. Moll. Dan. (1864) p. 72. Westerlund 

 Sv. Moll. (1865) p. 126, a.; Coll. Typ. Moll. Su. (1868) 

 n:o 118. 



Pisidium he7islowanum a Moquin-Tandon Moll. Fr. II (1855) p. 581 , 

 t. 52. f. 1—7. 



Pisidium fcmtinale var. I hensloivana Jeffreys Brit. Conch. I. (1862) 

 p. 21. 



ß IlOrniiXle: concha nrassior, ventricosior, projectura laraelliforrai destituta. 



Pisidimn fontinale Stein Sehn. u. Musch. Berl. (1850) p. 111. t. 3. 



f. 14. Jeffreys Brit. Conch. 1 (1862) p. 20 (exc. varr.). 

 Pisidium supiimm Schmidt Zeitschr. f. Malak. (1850) p. 119. 

 Pisidium htiiisloivanum ß inappendiculaium Moquin-Tandon Moll. Fr. 



II (1855) p. 581. t. 52. f. 8—10. 

 Pisidium henslowiamim var. a Mörch Syn. Moll. Dan. (1864) p. 72. 



Hab. In Suecia lisec speeies in prov. Skåne multis locis vulgaris, 

 ex. gr. in Höjeå, Alma å, Råbelöf sjö, Ölsjö (Malm), Lefrasjö etc.; in prov. 

 Östergötland passim, frequens circa Wadstena (C. A. W.) et in Nacke- 

 bosjön (E. v. Goes!!); in prov. Wester götland ad Göteborg passim, ex.gr. 

 in Quillebäcken, in canali urbico, in Fessbergs å (Malm); in prov. Ne rike 



